Magnesium in PDB 2i1q: Rada Recombinase in Complex with Calcium

The structure of Rada Recombinase in Complex with Calcium, PDB code: 2i1q was solved by X.Qian, Y.He, X.Ma, M.N.Fodje, P.Grochulski, Y.Luo, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 1.90
Space group	P 61
Cell size a, b, c (Å), α, β, γ (°)	84.200, 84.200, 104.700, 90.00, 90.00, 120.00
R / Rfree (%)	19.1 / 21.1

The structure of Rada Recombinase in Complex with Calcium also contains other interesting chemical elements:

Calcium	(Ca)	3 atoms
Sodium	(Na)	1 atom

The binding sites of Magnesium atom in the Rada Recombinase in Complex with Calcium (pdb code 2i1q). This binding sites where shown within 5.0 Angstroms radius around Magnesium atom.
In total only one binding site of Magnesium was determined in the Rada Recombinase in Complex with Calcium, PDB code: 2i1q:

Magnesium binding site 1 out of 1 in the Rada Recombinase in Complex with Calcium


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Rada Recombinase in Complex with Calcium within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg501 b:14.0 occ:1.00 O2G A:ANP401 2.0 18.6 1.0 O A:HOH602 2.1 14.4 1.0 O A:HOH603 2.1 13.2 1.0 O1B A:ANP401 2.1 14.5 1.0 OG1 A:THR112 2.1 13.4 1.0 O A:HOH601 2.2 12.0 1.0 PG A:ANP401 3.1 18.8 1.0 CB A:THR112 3.2 14.6 1.0 PB A:ANP401 3.3 17.7 1.0 N3B A:ANP401 3.6 17.2 1.0 O1G A:ANP401 3.6 19.9 1.0 O A:HOH609 3.9 18.7 1.0 O A:HOH624 3.9 22.2 1.0 OE1 A:GLU151 4.0 32.4 1.0 N A:THR112 4.0 14.1 1.0 O2A A:ANP401 4.1 16.6 1.0 CA A:THR112 4.2 14.4 1.0 OD1 A:ASP211 4.2 16.3 1.0 CG2 A:THR112 4.2 12.2 1.0 OD2 A:ASP211 4.2 17.2 1.0 OG1 A:THR153 4.3 19.5 1.0 O3A A:ANP401 4.3 16.2 1.0 O2B A:ANP401 4.3 14.6 1.0 O3G A:ANP401 4.4 18.0 1.0 PA A:ANP401 4.5 15.9 1.0 O1A A:ANP401 4.6 15.8 1.0 CG A:ASP211 4.7 17.1 1.0 CE A:LYS111 5.0 15.3 1.0 CB A:LYS111 5.0 14.2 1.0 CD A:GLU151 5.0 30.8 1.0 CB A:THR153 5.0 19.5 1.0

X.Qian, Y.He, X.Ma, M.N.Fodje, P.Grochulski, Y.Luo. Calcium Stiffens Archaeal RAD51 Recombinase From Methanococcus Voltae For Homologous Recombination. J.Biol.Chem. V. 281 39380 2006.
ISSN: ISSN 0021-9258
PubMed: 17050545
DOI: 10.1074/JBC.M607785200